[R] --no-save and --save toggle from inside R? + BATCH stderr

From: ivo welch <ivowel_at_gmail.com>
Date: Tue 11 Jul 2006 - 11:57:17 EST


dear R wizards: is it possible to instruct R to save or no-save from inside R? or does this have to be given at invokation on the command-line? The same question applies to "--no-restore-data", although this presumably would have to be decided in a .First() function or something like it.

on a similar note, I would love a CMD BATCH invokation to output just one line to stderr at the end of its run which tells me whether the batch job ended prematurely because of an error. I know this can be undesirable if run in another program that refuses output (e.g., a web browser, where this can cause havoc if issued before the content-type:), so it would require that some switch like --silent would suppress this one line summary/error. This is not urgent---I can use the R return code to write a wrapper for this facility, but this might be nice default behavior. My guess is that most of us won't mind to see a flag in writing if something went badly wrong.

sincerely,

/iaw



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